RT Journal Article ID 0311a68c4053eae7 A1 Abbasi, Mohammad-Hasan T1 Computer Simulation of Ordinary Gas Transfer in Tubes JF Journal of Porous Media JO JPM YR 2005 FD 2005-08-01 VO 8 IS 4 SP 379 OP 391 AB Transfer of pure gas particles in cylindrical tubes under a pressure gradient is formulated on the basis of an ordinary diffusion regime. The pressure distribution in the tube is derived, and a parameter called the transported gas fraction is introduced. It has been shown theoretically that this parameter is a function of the particle mean free path at the mean pressure and the tube length. A computer simulation was then used to verify the results of the formulation. It is shown that the results of the formulation and simulation are in good agreement within certain conditions, i.e., when the tube length is at least five times greater than the particle mean free path at the mean pressure. PB Begell House LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,1973b7b84834c41e,0311a68c4053eae7.html